greecegarcia61 greecegarcia61
  • 23-01-2020
  • Mathematics
contestada

8(12 – k) = 3(k+21)​

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crystal8939
crystal8939 crystal8939
  • 23-01-2020
Use Photomath!! Helps a lot
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saijuchacko saijuchacko
  • 23-01-2020

Answer:

96-8k = 3k+63

96 - 11k = 63      

(you get -11 by bringing the +3k to the other side which changes the sign to -3k ;   -8k-3k = 11k)

-11k = 63 - 96

-11k = -33

k = -33/-11

k= 3

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